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Rebecca Hargrave's Blog (6)

Tracking Pests with Growing Degree Days

Insects rely on warm temperatures to grow, and thus their emergence and life cycle progression can be tracked by tracking the "heating units" that accumulate each day. This is referred to as growing degree days.

Growing degree days (GDD) are calculated by average the high and low temperature for the day and subtracting 50 (base 50). The positive remainder is added to the cumulative total of GDD. For more information on GDD and how to calculate the go to:…

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Added by Rebecca Hargrave on May 3, 2012 at 4:11pm — No Comments

EAB in Dutchess County

Recent news: The Emerald Ash Borer has been found in Dutchess County, across from the large Ulster and Greene County infestation. This is the first EAB find east of the Hudson River. See the 2011 maps at http://www.nyis.info/index.php?action=eab_maps

The new location is not yet on the map.

Added by Rebecca Hargrave on March 28, 2012 at 3:30pm — 3 Comments

Arbor Day Ideas

Arbor Day is Coming! Are you ready?

There are lots of things you can do to celebrate Arbor Day. Traditionally we plant a tree, have the Mayor read a proclamation, and get our picture taken by Frank with the paper. But, there are other things you can do. If you're, like me, concerned about the Emerald Ash Borer, or other forest health issue, you can use the day to bring some attention to it.

Here are some ideas:

Take part in an Ash Tagging event. Contact your local…

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Added by Rebecca Hargrave on March 28, 2012 at 2:53pm — No Comments

Pest ID Resources

During the "How Pests Pester your Trees" webinar today, I was asked what references I use. I use a lot. Here is a short list. Some of these are for keying out, some would be used for verification of ID. Most of these do not include management recommendations; that's a different list!

Books I use (and I use mostly books for initial ID):

Insects that Feed on Trees and Shrubs. Johnson and Lyon. Cornell University Press:…

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Added by Rebecca Hargrave on March 21, 2012 at 3:47pm — 1 Comment

Emerald Ash Borer - Considerations for Planning- Research and the Real World

There is a new Emerald Ash Borer article out that evaluates different urban forest treatment options and weighs the pro and cons of each. And a recent tale from Fort Wayne, Indiana- which is trying to implement their plan.

This is a complex situation, all the more reason to stop, ask deliberate questions and make thoughtful decisions.

Economic Analysis of EAB Management Options:…

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Added by Rebecca Hargrave on February 28, 2012 at 5:34pm — No Comments

Emerald Ash Borer Map Updates

The latest Emerald Ash Borer maps are up at our NY Invasive Species web site: http://nyis.info/eab at http://www.nyis.info/index.php?action=eab_maps.

Included in the update is a new NYS Map and a new series of Treatment Zone maps based around each outbreak location. Treatment Zones are areas where we recommend considering your treatment options for EAB, as…

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Added by Rebecca Hargrave on January 13, 2012 at 10:35am — No Comments

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Small-Scale Logging

Started by Peter Smallidge in Project Profiles. Last reply by John McNerney Apr 15. 4 Replies 1 Like

Small-Scale Logging: Sugarbush and Woodlot Management Issue: Many woodlot owners and maple syrup producers want to be more active in gathering logs or firewood from their property. Often there are too few acres or too few trees to attract a…Continue

Tags: yourself, harvesting, woodlot, management, it

How to get rid of buckthorn

Started by Randy Williams in Woodlot Management. Last reply by John McNerney Apr 15. 1 Reply 0 Likes

I have some property where the best timber was harvested several years before I purchased it. There are now many areas where the buckthorn is so thick that nothing will grow under it. I am looking for suggestions on how to get these areas back…Continue

Replanting after timber harvest with climate change in mind

Started by Ben T. in Woodlot Management. Last reply by Patrik Schumann Mar 26. 1 Reply 0 Likes

Hi Everyone,I’ve been wondering what tree species are going to thrive over the next 50+ years as the climate warms in New York and I’m curious if folks are enhancing plantings of particular tree species for future commercial harvest with warmer and…Continue

Rust Colored Hemlock Bark

Started by Carl Albers in Woodlot Management Dec 31, 2023. 0 Replies 0 Likes

Picture of a hemlock with rust colored bark. When I cut a nearby tree, also with rust colored bark, it was infested with HWA. Attached picture shows a Logrite ATV arch in use.Continue

Rust Colored Hemlock Bark

Started by Carl Albers in Woodlot Management Dec 31, 2023. 0 Replies 0 Likes

The hemlocks in my woodlots have been infested with hemlock wooley adelgid (HWA) for at least three years now. Lately I've noticed some of them having a rust colored bark and I wonder if this is normal and that I just didn't notice it previously? …Continue